in src/main/java/com/google/cloud/dfmetrics/pipelinemanager/MetricsManager.java [147:151]
private boolean isValidNames(MetricStructuredName metricInfo) {
return !(CURRENT_METRICS.matcher(metricInfo.getName()).find()
|| Stream.of("ElementCount", "MeanByteCount")
.anyMatch(e -> metricInfo.getName().equals(e)));
}